The Ramshead Pub sells a large quantity of beer every Saturday. From past sales records, the pub has determined the following probabilities for sales:Barrels ..... Probability6 ........... 0.107 ......... 0.208 ......... 0.409 ......... 0.2510 ......... 0.05 1.00Compute the expected number of barrels that will be sold on Saturday